Thermo-electric fountain-syringe.



N. E. HOUSBR.

THERMO ELECTRIC FOUNTAIN sY-RINGE.

APPLICATION FILED MAY 24, 1910.

Pat ente d Aug. 8, 1911..

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THERIMO ELECTRIC FOUNTAIN SYRINGE.

APPLIGATION FILED MAY 24, 1910.

Patented Aug 8, 1.911;

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I A further object bf the invention is the 1 UNITED STATES NORMAN E. HOUSER, F ST. LOUIS, MISSOURI.

PATENT OF ICE.

' THERMo-ELEcrnio FOUNTAIN-SYBINGE.=\

Specification of Letters Patent. Patented 8, 1911- Application filed May 24, 1&0. Serial No. 563,232.

vented new and useful Improvements in 'Thermo-Electric -F0unta1 nSyringes, of

whichthe following is a. specification. Th s invention relates to syringes of that typein' whlch a continuous supply of warm or hot water can be supplied instantaneously as needed,- the device being especially useful for'dentis'ts and dental surgeons to wash out oral cavities,and also for treatingthe ear, eye, nose or throat.

. The invention has for one of its objects tc improve and simplify the construction andoperationof devices of this character so as to be comparatively simple and ineX-' pensive to manufacture, reliable and efiicient 1n. use and so controlled that "either. hot or cold water can be used. as required. 1; -Another object of the invention'is the provision of a novel electrical-heatingelement over. whichQwater passes to be heated thereby.

novel arrangement of the cut-0d valve 'for the watcr and; the push button or circuit closer, whereby both can be opera-ted'by the thumb of the hand in which they instrument is held, so that thecir'cuiti can be closed while the valve is held opened to obtain hot water or whereb the circuit can be opened while'; the valve 15 held opened forgsupplying cold I w 3 of .the barrel. The corejor support exixva-ter. v

With these {objects -in-view,and others as will appear asjth'e description"proceeds, the

invention comprises the various features of construction and. arrangement of parts which will bemore fully descr1bed'heremifter aiidf'set forth with particularityin the claims appended hereto.

In the accompanying drawings which illustrate .one embodiment of .the' invention, Figure 1' is aside view of the instrument. Fig.2 is a longitudinaljsection thereof. Fig. .3 is a similar section. taken at right angles is a sectional view on line H of Fig. L Fig. 5 is. a, sectionaliview on the line-5 5 of Fig. 2.

Similar reference characters are-employed to designate corresponding parts throughout; the several views.

'Referringto the drawings, designates it t hez'barreiof the deyioewhich is formed at oneend with a reduced nipple 1 in which is screwed a'nozzle 2 of-anyapproved shape.

1 The opposite end of the barrel or cylinder A is closed by a head 3 that screws into the barrel and this head is rigidly ,fastened'on a hollow stem or pipe 4 through which the water is'supplied, therebeing a valve 5 fastened to the outer end ofthe' pipe or-t'ube 4 so that the supply of water. can be controlled, and this valve may beeconnected-by a flexi ble conduitfb with an ordinary service 'pipe. The valve 5 consists'of a casing 7 in which is a seat"8 that is engaged by a valve 9.

passes through a, stufiing box 11 onthe cas- ,ing 7, the outer ehd of the stem being pro- ,vid'ed with a crank arm 12 that 'is curved inwardly toward the valve casing'and fhas a knob or button 13. Engaging under the crank arm and'fastened-to the valve casing 'is a leaf spring 14; which operates to hold the valve closed. Whenthefkhob13 is pressed against-the tension of the spring the valve opens so asto permitwater passing through the same.

The water is heated by passii-ig through the barrel and. forthis purpose a heating eleinentB is arranged in the barrel in such a manner as to eiiect-ive1y raise the temper-' ature 0f the water. This heat-ingelement- 'consists of a fiatsupport or core 15 which s of anysuitab'le i'na-iterial',-such as slate,

and one end of this support or core is securedxin a socket lfiarranged on the-head tends axially and longitudinally of the bar-- reland directly. inline With thetube-t so that the water discharged into-the barrel by the .said tube will flow along the *oppo;

site, sides-of the co'rej Inother words the I cor'e form's a-longitudinal partition in the barrel, but; this partitionstops'short of the outer end ofthe latter so'that, water can freely pass out of the nipple 1. Lapped or.

coiled around this support are two wires 1? and"l8 which? have their'convolutions alte'rnated and snaced apart-so that shortcir suiting will be prevented and thesewires are connectedwith an electric circuit so that current flows through them and t-here-. by heats the wa ter. The inner endof the .wires 1'3 and 18 pas's through openings19' "innthe core and their outer ends-iare passed through openings 20 in the outer end of the core and they: gare retained in these open- This valve 9 is operated by a stem 10 which inns by merely bending the extremities of the wires backward and fiat against the core." The side edges of the core are notched to form seats 21 forthe convolutions of the heating coils, a pass through insulating bushings 22 that extend through openings 23 in the head of the barrel, and at a point outside of the barrel these wires are connected with an electric supply circuit. When the circuit is closed current passes through one coil and thence by way of the water to the other coil so that both coils will be operative.

Mounted between the barrel A and valve device 5 is a switch or circuit closer designated. generally by C. This circuit closer comprises a spring pressed contact Qt which is mounted in a block of'insulation 25 that is fastened between the head 3 and annular flange 26 on the tube or piped andthis contact is adapted to bepressed by a push button 27 against the fixed contact 28 mounted in the support or block 25. In the block is a spring 29 which serves to hold the movable contact 24 normally out of engagement with the fixed contact and at 'the' same time hold the push button projected through the openings 80 in the sleeve or casing 31 that houses the switch, said casing or sleeve being-removahly fastened to the annular flange 26 by screws 3-u The movable contact 2% swings on a pivot 33 that forms a binding post 34 for connection with one of the heating wires. 'The fixed contact 28 has a binding post 35' to which a circuit wire 36 is fastened. Surrounding the tube l isan insulating sleeve 37, which insulates a ring 38 of the tube and on this ring is a binding post 39 for connection with the other heating wire and with the circuit wire 4L0. These circuit wires extend into the chamber that contains the switch through an opening all in the flange 26 and the wires can be connected by a plug with a lamp socket of the lighting circuit. The push button is located at the same side as the knob of the valve handle so that the thumb can .be used for pressing both simultaneously or the thumb can be used for pressing only one valve when only cold water is desired. Obviouslyby pressing the push button the circuit w ill'be closed so that current will flow through the heatthe invention relates,and while I have de- I scribed the principle of operation of the invention, together with the device which I now consider; to be the best embodiment The inner ends of the coils thereof, I desire to have it understood that the devlce shown 1s merely illustrative and that such changes'may be made when de-.

said support having openings into which the.

free ends of the wires are engaged, a valve controlled conduit discharging into the chamber, and means for connecting the wires with the supply circuit.

2. An instrument of the class described comprising a barrel, a head having a threaded connection with the barrel, a pipe connected with the head to discharge'fluid into the barrel, a socket arranged on the head, an insulating support extending longitudinally of the casing and anchored in-the socket whereby the barrel can be detached from the head without removal of the support, heating coils extending into" the barrel through the said head and wound around the support, and binding posts outside the barrel for connecting with an electric .cir-

cuit the outer ends of the coil that project through the head, said support being immovable from the socket while the coilsare connected. with the binding posts.

3. An instrument of the class described comprising a barrel, a pipe for supplying i'iuid. thereto, an electric heating element within the barrel and including wires extending out of the latter, an insulating sleeve surrounding the pipe, a ring on the sleeve, means on the sleeve torlconnectingone of the wires ot] the heating element" thereto and for connecting a circuit wire to the ring, a switch to which the other wi l of the element is connected and having'mean for connecting a supply wire thereto, a easmg removably surrounding the switch and ring, and a device extending out of the cas-, ing and held thereby in coiiperativerelation with the switch for closing the circuit.

l. An instrument of the class' described comprising a bar'reh-a, conduit formed with a head at one end to which the barrelis attached and with'a flange spaced from the head, a shell surrounding the -portion of-the conduit between the head and flange and cooperating with the' head and flange to form a housing, electric wires leading into the housing through the said flange, heating coils within the barrel, and connections be tween the wires and coils, one of the connections including a switch for opening and closing the circuit, said shell being removcomprising a barrel, a pipe connected withoneend thereof,, aheating element in the barrel and including wires leading into the latter, a binding post with which one of the wires is connected, a circuit wire c011- nected with the said binding post, a second binding post, a ring surrounding and insulated from the pipe for holding the second binding post on the pipe, a switch mounted thereon and including relatively movable contacts, means for connecting one of the contacts with the said heating element, a circuit wire connected w th the other contact, and means for actuating the movable contact. i 6. An instrument of the class described one end thereof, a heating element in the barrel and -including wires leading into the latter, a binding post outside the barrel and with which one of the wires is connected. a circuit wire connected with the said binding post, a second binding post outside the barrel, insulating means for holding the second binding post on the pipe. a switch mounted on the pipe and including 'rela- 'tiiely movable contacts, means for connecting one of the contacts with the said heating element, a circuit wire connected with the other contact, a casing inclosing the switch and removable from around the latter, a spring acting-on the movable contact to hold the same in open circuit positioin and a push button extending out of the casing and arranged to press the movable contact into engagement with the fixed contact. In testimony ,whereof I attix my signature in presence of two witnesses.

NORMAN E. HOUSER. Vitnesses -A. G. HEILIGSTEDT, ELMER H. FREKER. 

